Cut No. 1 on the spokane, Portland & Seattle Railroad (Miocene of the United States)

Where: Washington (47.6° N, 117.5° W: paleocoordinates 48.4° N, 114.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Latah Formation, Langhian (16.0 - 13.8 Ma)

• Latah Formation overlies the Grande Ronde basalts (16-15.5 Ma; Barry et al., 2013), although younger parts of the Grande Ronde are absent at some localiies (Nash & Perkins, 2012). It underlies the Saddle Mountain basalts (c. 15 Ma and younger; Barry et al., 2013). Ash beds within the Latah Formation at White Bird, Idaho, are dated to 15.77 Ma (Mascall Tuff), 15.66 Ma (Bully Creek tuff), and an interpolated age of 14.3 Ma (Nash & Perkins, 2012).

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified mudstone

• ''The area was a broad valley flanked by rolling hills and ridges, some of which rose 1,500 feet or more above the general level, with considerable streams coming down from the north or northwest. Then came the lava flow, which completely dammed the streams, throwing the water back into shallow lakes or ponds. . . .. The open bodies of water were teeming with microscopic diatomaceous life. Here and there pond weeds floated on the surface, and about the borders were patches of cattails, grasses and sedges." Knowlton, 1923

Size class: macrofossils

Preservation: mold/impression

Collected by Kenneth Buxton in 1937; reposited in the USNM

Primary reference: T. E. Snyder. 1949. A new Miocene Ulmeriella (fossil Isoptera, Hodotermitidae). Proceedings of the Entomological Society of Washington 51(4):164-165 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 146100: authorized by Matthew Clapham, entered by Jered Karr on 15.06.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Blattodea -
Ulmeriella latahensis n. sp. Snyder 1949 termite
USNM 59181